Brick mold rapping mechanism



July 21, 1931. c Po'rfs ET AL 1,815,583 BRICK MOLD RAPP iNG MECHANISM v Filed Feb. 7. 1929 3 Sheets-Sheet l f MM w Y M ffim r V 0 iL WL July 21, 1931. c. PoTTs ET AL BRICK MOLD RAPPING MECHANISM Fiiea Feb. 7. 1929 Avril/mac, C/g/fanfiaff. and

win/119w Patented July 21, 1931 PATENT IFFIJCJE CLAYTON PGT'IS AND WILLLAM AS. .EMINTER, OF INDIANAPOLIS, INDIAKA,.ASSIGNORS TO \O.-& -G..IP.O.T.TS COMPANY, 6F INDIANAPGLIS, INDIANA, EAL CGRPQEATEQH QF .INDIANA BRICK MUI'ID RALPPING MECHANISM Application filed February 7, 1929. Serial "No, 3138;105,

This inttenitinn relates ally to the art of brick snaking and "pillitlfllllilfi' .dco means applied to a brick molding machine for armpping .the briokm'oldsand iha's' for its princi- 5 :pa l objects the provision of such means that may have itsmoving pants ilargel y (concealed and covered up to prevent encesshve wear due to clay and foreign matter Working down through the machine; "that may he adjusted 1130 vary the hie-W f rapping; [that will not interfere With the mevements of an operator about the (machine :and not he a -so11i-'ce-o:i danger to him.; and that Wiillacanse each mold to receive aiplurality ofhlorvsaivith the minimum of movement ozf'the ."a'ssotciated parts.

Qther objects will become apparent :zEI-t once to those versed rinit'heartzin the following description ofithe one zparticnlar form of the invention as shown ibyfthe accompanying drawings, in which Fig. 1 is a perspective View otithe for- 'Ward :end of .a brick molding nnac hlne :em-

hodying the "invention;

Fig. '2, a fragmen'tary top plan wiew of the molding table;

Fig. 3, a side elevation of theitable;

Fig. 4, a Ilongitud-inal "vertical sectionion the line H illl Fig. '2;

Fig. 5, a transverse vertical section onthe line 5 5'in Fig. 3;

Fig. 6, :a transverse vertical sectien on the line 6- 6 in Fig. 3.;

Fig. ii, a longitudinal vertical section on the line 77 in Fig. 6;

Figs. 8, 9., and 10 various relative positions off the hammer :latch;

"Fig. 11,.a top plan View on a reduced-scale :Of the table With molds thereon;

Fig. =12,a detailof 'a spring seat; :and

Fig. 13, a vertical section on the line Fl3--lk3 an Fig.110.

like characters of reference indicate like "parts throughout the several 'vieWs in the drawings. i

Referring first to Figs. 1-4, the table which is carried in the machine \to support molds thereon as the clay is gpressed into them, isprovided with ears 1:7 and1-8 on one side "to :pivotal'ly support the hammer arm 1 9 therebetween so that xthe arm mayswing "in a horizontal plane; (Qn the :otherside :o'f -the table, the siani'lar ea'rs carry :t-he hammer arm .20 ttO-SWil1lg.7ill substantially the same horizontal plane asthat of -the19. From the arms 19 and 20, the legs LEiivand Q'Q B'XEGILd respectireily inwardly :under the table 15 tor a distance"andiontheir inner ends on ithe!bElCi faces thereof, are bolted the brackets :16 and-23., reach 01 which :has ;a 'zforwardly =doivnwaisoly and outwardly earned roam :Q l and '25 respectively entending therezfrom (2Figs.r8,f9, and 19;)

QQtnWnrd the tablelongitudinal center line the hammer arms 5L9 and-20 are pulled Wardly itowardithe sides of the table. I

The: rocker arms 28 andf29 are normadil y w swung ltowardsthe center line by means [of the respective-springs 3,0:andi81. Each of these springs has ,a head :32 fitted :in their inner :end, and this head has ;a slotted end into Averticaltpin33 (Fig. 12:)rpasses through the slotted end andthesrecker arms have notches 34 therea'long into which {the pins 33 :mayenter. 'Theiopp'ositeior onter'ends ofthe wsprings 30 and {311MB married on the seats 35%5 wand 36 projectingtinwardlyitrom the -longi- 'tudinzrlsidesof the table .1 5. A'bnr :37-2BX- tends outwardly Within (the springs trom each inner head 321501 2a idistance .as a means for "preventing ithe buckling nit'tl ie springs iWillGll' connoressed.

Eachofihe (outer spring seats 35 and36has ;a screw-threaded s'sliank I38 extending therentrom lent throughthe -table side and screwthreadedly engaged through a spiirqgearf39 05 ig. 6) fllhe shank extends ioirthroiigh thergear andtha'snn iouter :end square in cross section "for a substantial length slidingly guided through 1-a collar 40 fha'vling. an enter neylindrinal zsnrfiacezand which is normally held against rotation by means of the set screw 41. A spur gear 42 is in mesh with the gear 39 and has a shaft 43 extending there through in a fixed relation therewith. This shaft extends from one side to the other of the table 15 so that both gears 42 (one on each side of the table within the respective housings 44) are revolved by turning of the shaft. A crank 45 (Figs. 3 and 6) fitted on the pro jecting end of the shaft 43 is employed as means of revolving the shaft 43 to revolve the gears 39 whereby the shanks 38 are ad vanced or withdrawn through the gear 39 one of the shanks being threaded left handed and the other right handed so that the seats 35 and 36 will be simultaneously carried toward each other or simultaneously away from each other upon rotation of the shaft 43. It is, therefore, to be seen that the compression of the two springs 30 and 31 may be adjusted at will.

While both springs 36 and 31 may be simultaneously compressed or extended as above described, each spring may be independently adjusted as to compression by permitting the shaft 43 to remain stationary, removing the set screw 41 from engagement with the collar 40 and there turning the shank 38 by its outer square end projection which will cause the collar 40 to revolve therewith and cause the shank 38 to travel longitudinally through the gear 39 to the desired position whereupon the collar is again secured by running the set screw 41 against it.

Rubber bumpers 45 and 46 act as stops limiting the extreme travel of the hammer arms 19 and 20 toward the table sides. A slidebar 46 is slidingly guided and retained centrally longitudinally along the under side of the table 15 and carries a head 47 bolted to its forward end, on the top side of which are two rollers 48 and 49 each carried on a ver tical axis and adapted to contact and roll along the inner edges of the rocker arms'28 and 29 as the head 47 may be reciprocated. The travel of the head 47 is so determined and the rocker arms 28 and 29 are so curved in relation thereto that forward travel of the head will permit the arms to swing in towarc each other through pressure of the springs 30 and 31, whilerearward travel will cause the rollers to contact and spread the arms apart to overcome the springs 30 and 31.

' On the respective sides of the head 47 are pivotally secured the dogs 50 and 51, the dogs being free to swing vertically about horizontal pins 52 (Fig. 4) and being limited by the set-screws 53 on the head from swinging from below substantially a horizontal plane thereacross.

On the forwardface of each of the dogs 50 and 51 are bolted the respective plates '55 and 56. Each of these plates is formed so that, as the head 47 is moved backwardlyand the hammer arms 19 and 20 thereby are carried outwardly, the plates 55 and 56 contact the forward faces of the respective cams 24 and 25, and by reason of the curvature of the cams, the plates slide upwardly thereover and then drop down behind the cam brackets 16 and 23 as the head 47. comes to the end of its stroke.

Now when the head 47 is moved forward, the plates 55 and 56 are brought up snugly against the back faces of the brackets 16 and 23 and a. lug 57 projecting forwardly from the under edge of each plate 55 and 56 (Figs. 8, 9, 10, and 13) comes under the brackets to prevent the plates from moving vertically. Continued travel of the head forward causes the legs 21 and 22 to be carried forwardly and outwardly to swing the hammer arms 19 and 20 outwardly accordingly against the compression of the springs 30 and 31 until the plates slip 0d the ends of the brackets 16 and 23 whereupon, the legs 21 and 22 being free, the hammer arms 19 and 20 swing sharply inwardly toward the sides of the table 15. The brackets 16 and 2-3, and plates 55 and 56 are so arranged, that one plate will slip past its respective bracket before the other plate slips past its respective bracket, so that both hammer arms 19 and 20 do not swing in simultaneously, but quickly one following the other.

The head 47 is not reciprocated c0ntinuously, but in timed relation to the movement of molds (Fi 11) along the table 15. The head 4 is moved forwardly at the correct time and then rearwardly where it remains for a time interval before moving ahead again. This action is obtained by means of the links 60 and 61 interconnecting the bar 46 near its rear end with the lower arms 62 which are fixed on the shaft 63. This shaft 63 is rocked intermittently by the connecting rod 64 from the wheel 65, by reason of the slotted end of the rod 64 engaging the crank pin on the crank 66 (Fig. 1).

Referring now particularly-to Figs. 1 and 11, molds 67, 68, 69, 70 are inserted consecutively under the press to be filled with clay and are moved forward one at a time over the table 15 to come between the guides 72, 73, 74 and 75 extending vertically above the table top from along its sides. The forward ends of the hammer arms 19 and 20 carry heads or blocks 76 and 77 bolted thereto which passbetween the respective guides. The molds are stopped on the table so that the line 78 between two adjacent molds comes between the openings between the guides, whereby, when the hammer heads strike, the heads will strike the corners of the two molds 63 and 69 and not just one mold alone.

The molds are slightly less in width than the distance between the guides on the respective sides of the table so that the molds may be moved slightly sideways over the ta- -i ble between-theguidesj: Now 'a's oiie hammer head "56 strikes corner's o'f the niolds 68 end- 69, the molds will he driveiiacross against the oppositeguidesto reoeivetherehy second blow, whereupon the hammer head 7 strikes andknookstho molds across to receive a fourth rapping.

Each corner ofea'ch nioldfbeing subjected toa blow fronr ahammer head, each mold, therefore, in effect receives eight rappings before passing entirely beyond the guides.

The molds are moved forwardly over the table in timed sequence by a mechanism actuated from the shaft 63, said mechanism being well known to those versed in the art and not here forming a part of our invention. 7

It is to be noted that loose particles of clay may drop down through between the rollers 80 before the molds are rapped and that the moving parts actuating the hammer arms are completely covered over by the solid table top (Fig. 1.).

While we have here described and shown our invention in one particular form, it is obvious that many structural changes may be made from that form without departing from the spirit of the invention, and We, therefore, do not desire to be limited to that precise form nor any more than may be required by the following claims.

WVe claim:

1. In a mold rapping device, a table adapted to carry molds thereon, mold arresting means, a hammer on each side of the table movable in relation thereto, means normally moving said hammers toward the table, means overcoming said first means for holding said hammers outwardly from the table, and actuating means alternately releasing said hammers from said second means to strike the molds and knock them in alternate opposite directions against one of the arresting means.

2. In a mold rapping device, a table adapted to carry molds thereon, a hammer on each side of the table pivoted to swing in relation thereto mold guides on each side of the table, said guides being spaced apart a distance slightly greater than that of the width of the molds passing therebetween, said hammers being adapted to strike said molds from their sides and knock them against said guides.

3. In a mold rapping device, a table adapted to carry molds thereon, a hammer on each side 01" the table pivoted to swing in relation thereto, mold guides on each side of the table, said guides being spaced apart a distance slightly greater than that of the width of the molds passing therebetween, said hammers being adapted to strike said molds from their sides and knock them against said guides, and means for withdrawing said hammers from the molds and causingthe hammers 1 to strike consecutively one after the other.

The method ot'rapping' molds, consisting or intermittently moving a plurality of l li lds Contact one with the other, moving each: mold successively and suddenly in a lateraldire'etion and suddenly arresting it and'tlifi moving the same mold suddenly ih the oppositedireetion and suddenly arresting it' duringintermissions ot the first movement. 7 5. 'Ehe method ofrapp'ing'molds, cofisist= in g o'f-iiiti mittiitly'moving a plurality of molds iii contact one' with the other, suoe'es' sively moving enadja'ee t conier oi each pair of rhol'de' suddehlyiii a' lateral direction and snddenly arresting" them, and then moving the corner at th oppositesideand end of one of that 'pair 'a fid a fiillowing meld suddenly 'imtheo'p 'p osite direction arid su ddenly arresting: theme, all: during intermission period's i'i'l the 'first movement of the molds.

6; In a I'n'oldrapping-device,aitable, a' pa ir okt hammer arms each pivoted at the side of tho-table to swing 'fthere'toward, aile'g extendifig from'each arm to n ridefthe table, means normally tendin to toroethealrrirs in w ar dly, a under thetahle -adapte'd to liemoved to 'overconie aid means and carry'said outwardly fromtheta-h1g and 7 dogs ass'o'oi ated-with s id" member to ontact" said legs whereby saidilegs' arerocked tooarry the outwardly fi 'brn the table then permit the arms to s rin'g baek towar'dthe-tahle;

7. In a mold ra pingdevioe, a ta-ble carry ingniolds thereon, ahaminer ivote'd on each 1 side: of: the table adapted to" swing at successive moments and knook' the molds-on diagonally opposite c'or-n'ersin op osite-dimotions, springsrnermallytending to swing the arms-toward the tableand means for adjustingttheforoe o f'the hammer blow.

8. In a mold rap'pirigdev'ice a pair of ham more, a: pair: of springs normally moving said hammers; a seat atthe end of each spring, a s'crew thre a ded shank extending from each seat,- a gear screwthreade'dly receiving the shank therethron h; me for normall preventingth'e rotation but permitting long itu diiia ltrawel or: the shankgand means' for' simaltaheohsly revolving ea' ch of said gears, said gears losing held against longitadihal travel in relation to each other.

9. In a mold rapping device, a pair ofhar n mers, a; pair of springs normally moving said hammers, a s eat at the end of each spring, a serew tlireaded'slianl extending from each seat, gearsereW-threadedly receiving the shank therethrough, means for normally prevehoing the rotation but ermittihg'lehgitudinaltravel of the shank, and means for si r rhiltaneohsl revolving each of said gears, said gearsb'eizn g held against longitudinal travel inr'l'ation to each other, means iohr'e'l'easing said first means whereby either one of said shanks ma he individually revolved to be carried longitudinally through the gear of the other shank.

10. In a mold rapping device, a table, a hammer arm pivoted at each side of the table, a pair of spaced apart rocker arms under the table, a link between each rocker and the adjacent hammer arm, a spring normally pressing each of the rocker arms inwardly to carry the hammer arms toward the table, and a bar reciprocating under the table having a head extending between said rocker arms, said rocker arms being bowed whereby said head may spread said rocker arms apart upon travel of the bar to carry said hammer arms away from the table, and means associated with said bar permittingsaid hammer arms to fly back toward the table.

11. In a mold rapping device, a table, a hammer arm pivoted at each side of the table, means normally carrying the hammer arms toward the table sides, a leg extending to under the table from each of said arms, a reciprocating bar under the table, a cam on the inner end of each leg having an upper face curving downwardly from the end of the leg a dog pivoted on each side of the said bar adapted to rock freely in a vertical plane, stops limiting the travel of the dogs downwardly, said bar being capable of being moved whereby said dogs contact said cams, ride upwardly thereover and drop therebehind and the reverse travel of the bar causes said dogs to bear against and rock said legs outwardly and then release them.

12. In a mold rapping device, a table, a hammer arm pivoted at each side of the table, means normally carrying the hammer arms toward the table sides, a leg extending to under the table from each of said arms, a reciprocating bar under the table, a cam on the inner end of each leg having an upper face curving downwardly from the end of the leg, a dog pivoted on each side of said bar adapted to rock freely in a vertical plane, stops limiting the travel of the dogs downwardly, said bar being capable of being moved whereby said dogs contact said cams, ride upwardly thereover and drop down therebehind and the reverse travel of the bar causes said dogs to bear against and rock said legs outwardly and then release them, and said dogs having lugs thereon engaging under said leg ends.

13. In a mold rapping device, a table, a

" hammer arm pivoted at each side of the table to swing theretoward, a pair of rocker arms under the table, links interconnecting the hammer arms with the rocker arms, springs normally pressing the rocker arms to swing the hammer arms toward the table sides, a bar adapted to be reciprocated under the table, a head on the bar adapted to spread said rocker arms apart upon travel of the bar, a leg extending from each hammer arm to under the table, and dogs on the head tures.

CLAYTON POTTS. WILLIAM S. MINTER. 

